January weather forecast
Hartford, IL

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Weather in January

January, the same as December, is another cold winter month in Hartford, Illinois, with temperature in the range of an average low of 23.4°F (-4.8°C) and an average high of 36.1°F (2.3°C).

Temperature

Hartford witnesses the coldest weather in January, with temperatures averaging a high of 36.1°F (2.3°C) and a low of 23.4°F (-4.8°C).

Humidity

In Hartford, the average relative humidity in January is 77%.

Rainfall

In Hartford, in January, during 5.6 rainfall days, 1.26" (32mm) of precipitation is typically accumulated. Throughout the year, there are 138 rainfall days, and 23.9" (607mm) of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall. In Hartford, in January, during 6 snowfall days, 1.18" (30mm) of snow is typically accumulated. Throughout the year, there are 18.6 snowfall days, and 4.53" (115mm) of snow is accumulated.

Daylight

In Hartford, the average length of the day in January is 9h and 49min.
On the first day of the month, sunrise is at 7:18 am and sunset at 4:48 pm. On the last day of January, sunrise is at 7:07 am and sunset at 5:20 pm CST.

Sunshine

The months with the least sunshine are January and February, with an average of 4.5h of sunshine.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 2 in January converts into the following recommendations:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Updated: Jun 24, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month?

January is the coldest month, with an average high-temperature of 36.1°F (2.3°C) and an average low-temperature of 23.4°F (-4.8°C).

How cold is January?

The high-temperature, in January, in Hartford, is 36.1°F (2.3°C), while the low-temperature averages to 23.4°F (-4.8°C).

What is the average humidity in January?

In January, the average relative humidity is 77%.

How much does it rain in January?

In Hartford, in January, it is raining for 5.6 days, with typically 1.26" (32mm) of accumulated precipitation.

How many days does it snow in January?

In Hartford, in January, during 6 snowfall days, 1.18" (30mm) of snow is typically accumulated.

What is the average length of the day in January?

In Hartford, the average day length in January is 9h and 49min.

When is the sunrise / sunset in January in Hartford?

In January, on the first day of the month, sunrise is at 7:18 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 5:20 pm CST.

What is the month with the least sunshine in Hartford?

The months with the least sunshine are January and February, with an average of 4.5h of sunshine.

How many hours of sunshine does Hartford have in January?

The average sunshine duration in January is 4.5h.

When is the lowest UV index?

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.

How high is the UV index in January?

The average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Hartford, IL

Average temperature in January - Hartford, IL
  • Average high temperature in January: 36.1°F

The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (36.1°F).

  • Average low temperature in January: 23.4°F

The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

Average pressure in January
Hartford, IL

Average pressure in January - Hartford, IL
  • Average pressure in January: 30.16"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in January
Hartford, IL

Average wind speed in January - Hartford, IL
  • Average wind speed in January: 9.6mph

The windiest months (with the highest average wind speed) are January and February (9.6mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).

Average humidity in January
Hartford, IL

Average humidity in January - Hartford, IL
  • Average humidity in January: 77%

The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is October (71%).

Average rainfall in January
Hartford, IL

Average rainfall in January - Hartford, IL
  • Average rainfall in January: 1.26"

The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is February (1.14").

Average rainfall days in January
Hartford, IL

Average rainfall days in January - Hartford, IL
  • Average rainfall days in January: 5.6 days

The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is January (5.6 days).

Average snowfall in January
Hartford, IL

Average snowfall in January - Hartford, IL
  • Average snowfall in January: 1.18"

The month with the highest snowfall is February (1.61").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in January
Hartford, IL

Average snowfall days in January - Hartford, IL
  • Average snowfall days in January: 6 days

The month with the highest number of snowfall days is January (6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in January /
Average sunshine in January
Hartford, IL

Average daylight in January / Average sunshine in January - Hartford, IL
  • Average daylight in January: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in January: 4h and 3min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 30min).

Average sunshine days in January
Hartford, IL

Average sunshine days in January - Hartford, IL
  • Average sunshine days in January: 20.3 days

The month with the most sunshine days is December (20.4 days).
The month with the least sunshine days is July (12.3 days).

Average UV index in January
Hartford, IL

Average UV index in January - Hartford, IL
  • Average UV index in January: 2

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in January
Hartford, IL

Average cloud cover in January - Hartford, IL
  • Average cloud cover in January: 51

The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are June, July and August (Cloud cover 29).

Average visibility in January
Hartford, IL

Average visibility in January - Hartford, IL
  • Average visibility in January: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Hartford, Illinois, USA

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